申请人:MITSUI PETROCHEMICAL INDUSTRIES, LTD.
公开号:EP0370729A1
公开(公告)日:1990-05-30
A process of producing isopropylnaphthols by oxidizing diisopropylnaphthalenes with molecular oxygen in a liquid phase to provide a reaction mixture which contains therein diisopropylnaphthalene monohydroperoxides and then acid decomposing the monohydroperoxides to isopropyl-naphthols, is characterised by separating an organic layer from the reaction mixture, adding a aliphatic alcohol of 1-4 carbons to the organic layer, and crystallizing the diisopropylnaphthalenes while allowing the diisopropylnaphthalene monohydroperoxides to remain dissolved in the organic layer thereby to separate the monohydroperoxides from the diisopropylnaphthalenes.
In a further embodiment the isopropylnaphthols are crystallised from aromatic hydrocarbons of 6-12 carbon atoms.
一种生产异丙基萘酚的工艺,是在液相中用分子氧氧化二异丙基萘,生成含有二异丙基萘单过氧化氢的反应混合物,然后酸分解单过氧化氢生成异丙基萘酚,其特征在于从反应混合物中分离出有机层、在有机层中加入 1-4 碳的脂肪醇,结晶二异丙基萘,同时允许二异丙基萘单过氧化氢继续溶解在有机层中,从而将单过氧化氢与二异丙基萘分离。
在另一个实施方案中,异丙基萘酚是从 6-12 个碳原子的芳香烃中结晶出来的。